JOURNAL OF NATURAL RESOURCES ›› 2021, Vol. 36 ›› Issue (2): 342-355.doi: 10.31497/zrzyxb.20210206

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Optimizing the ecological networks based on the supply and demand of ecosystem services in Xiamen-Zhangzhou-Quanzhou region

HU Qi-yu1,2(), CHEN Song-lin1,2()   

  1. 1. Provincial Key Lab of Subtropical Resources and Environment of Fujian, Fujian Normal University, Fuzhou 350007, China
    2. Institute of Geography, Fujian Normal University, Fuzhou 350007, China
  • Received:2019-05-30 Revised:2019-07-24 Online:2021-02-28 Published:2021-04-28
  • Contact: CHEN Song-lin E-mail:zhongguo999long@qq.com;slchen6@163.com

Abstract:

Coupling the supply and demand of ecosystem service with the security pattern of landscape ecology, and deconstructing the ecological space structure of urban agglomerations are the basis for optimizing the spatial arrangement of agriculture-urban areas-ecology networks. Based on the theory of supply and demand for ecosystem service, ecosystem service supply area was determined by fusing the most important areas of the integrated ecosystem services and the boundaries of the ecological red line, by taking Xiamen-Zhangzhou-Quanzhou Urban Agglomeration in the southeast coast of Fujian province as an example. In combination of natural and economic factors, the consumption pattern can be constructed. The minimum cumulative resistance model was further applied to establish a landscape ecology security pattern in order to identify landscape components, such as demand zones, network of ecological flows, and key nodes. Furthermore, the ecological network space of Xiamen-Zhangzhou-Quanzhou region was reconstructed by utilizing layered overlay analysis. The results showed that: (1) The supply area occupied 41.64% of the study area, in addition, ecological buffer zones, ecological sensitive zones, and production and living zones accounted for 22.67%, 31.58%, and 4.11%, respectively. (2) The source of supply was mainly distributed in the hilly and mountainous areas of the central and western regions, where the low-cost areas of ecosystem service were located. The high-cost areas concentrated in the coastal regions were characterized by an octothorpe shaped distribution pattern. (3) Ecological flow paths were highly meshed. They were mainly composed of forests in the central and western regions, and urban water system, green space systems and surrounding farmland in the eastern coastal areas. Both the type and intensity of the driving factors suggested significant spatial heterogeneity. (4) Constructing an ecological network space optimization layout of "nine zones, four groups, one belt, nine corridors and multi-centers" in the study region was also proposed in this research, so as to coordinate the production-living-ecological function among the region and facilitate the synergetic development of the economic-ecological space.

Key words: ecosystem services, ecological networks, MCR model, Xiamen-Zhangzhou-Quanzhou region